Home / 51,076.38-70,485.40-28,720.38

Finding the Fourth Proportional to 51,076.38, 70,485.40 and 28,720.38

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Solution

The fourth proportional to 51,076.38, 70,485.40 and 28,720.38 is: 39,634.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,076.38 : 70,485.40 = 28,720.38 : x
  2. Step 2: Convert to fraction form
    51,076.38/70,485.40 = 28,720.38/x
  3. Step 3: Cross multiply
    51,076.38x = 70,485.40 × 28,720.38
  4. Step 4: Simplify right side
    51,076.38x = 2,024,367,472.45
  5. Step 5: Solve for x
    x = 2,024,367,472.45/51,076.38
  6. Step 6: Final answer
    x = 39,634.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.